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pentagon [3]
2 years ago
13

To the nearest square metre, calculate the curved surface area of the half pipe if it is 9m long? (With a radius of 2.5m)

Mathematics
1 answer:
Mice21 [21]2 years ago
4 0

Answer:

70.686 m^{2}

Step-by-step explanation:

A=2πrh (area of cylinder without top or bottom)

A = 2\pi(2.5)(9)

A = 141.372

divide by two for half of pipe.

A = 70.686

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A florist must make 5 identical
Sonbull [250]

Answer:

A. 40x + 10y + 10z = $160

B. 8 Roses, 2 lilies and 2 irises

C.

1. 20x + 5y + 5z = $80

2. 4x + y + z = $16

3. 8x + 2y + 2z = $32

Step-by-step explanation:

Cost for each flower = $160/5 = $32

So we have $32 for each bouquet consisting of 12 flowers each.

Roses = x = $2.50 each

lilies = y = $4 each

irises = z = $2 each

8x + 2y + 2z = $32

8($2.50) + 2($4) + 2($2) = $32

$20 + $8 + $4 = $32

$32 = $32

a. Maximum budget is $160

40x + 10y + 10z = $160

40($2.50) + 10($4) + 10($2) = $160

$100 + $40 + $20 = $160

$160 = $160

b. From above

8x + 2y + 2z = $32

8 Roses, 2 lilies and 2 irises

c. No. There are other solutions If total cost is not limited

1. 20x + 5y + 5z

20($2.50) + 5($4) + 5($2)

$50 + $20 + $10

= $80

2. 4x + y + z

4($2.50) + $4 + $2

$10 + $4 + $2

= $16

3. 8x + 2y + 2z

8($2.50) + 2($4) + 2($2)

$20 + $8 + $4

= $32

7 0
2 years ago
Which set of ordered pairs does not represent a function?
weqwewe [10]

Answer:

{(0,0),(0,1),(1,2),(1,3)}

Step-by-step explanation:

If this was a function it would be (0,0) ,(1,1), (2,2) ,(3,3) and so on

4 0
3 years ago
Four less than a number is twenty
Solnce55 [7]
The answer would be 24 because 24-4 is 20
7 0
2 years ago
Read 2 more answers
What is 186/248 as a mixed number??
rjkz [21]
You can simply it to 3/4
4 0
3 years ago
Read 2 more answers
the population of a town was 650000. Due to an epidemic,the population of the town went down by 12%.Find the current population
Dimas [21]

Answer:

572000

Step-by-step explanation:

The population reduced by 12%, so (100-12)=88% is remaining.

So, 88% of 650000= 0.88 x 650000

= 572000

4 0
2 years ago
Read 2 more answers
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